Q3 of 52 Page 154

Radius of a sector of a circle is 3.5 cm and length of its arc is 2.2 cm. Find the area of the sector.


Radius of circle, r = 3.5 cm


Length of arc, l = 2.2 cm


As we know,




Also,




⇒ Area of sector = 3.85 sq. cm


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1

Radius of a circle is 10 cm. Measure of an arc of the circle is 54°. Find the area of the sector associated with the arc. (π = 3.14)

 2

Measure of an arc of a circle is 80 cm and its radius is 18 cm. Find the length of the arc. (π = 3.14)

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Radius of a circle is 10 cm. Area of a sector of the sector is 100 cm2. Find the area of its corresponding major sector. (π = 3.14)

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Area of a sector of a circle of radius 15 cm is 30 cm2. Find the length of the arc of the sector.